{"id":{"repo_id":"unt","oai_identifier":"info:ark/67531/metadc3166"},"canonical_url":"https://search.dev.ndltd.org/etd/unt/info:ark/67531/metadc3166","repository":{"repo_id":"unt","name":"University of North Texas","base_url":"https://digital.library.unt.edu/oai/"},"display":{"title":"Application of Thermomechanical Characterization Techniques to Bismuth Telluride Based Thermoelectric Materials","abstract":"The thermoelectric properties of bismuth telluride based thermoelectric (TE) materials are well-characterized, but comparatively little has been published on the thermomechanical properties. In this paper, dynamic mechanical analysis (DMA) and differential scanning calorimetry data for bismuth telluride based TE materials is presented. The TE materials' tan delta values, indicative of viscoelastic energy dissipation modes, approached that of glassy or crystalline polymers, were greater than ten times the tan delta of structural metals, and reflected the anisotropic nature of TE materials. DMA thermal scans showed changes in mechanical properties versus temperature with clear hysteresis effects. These results showed that the application of DMA techniques are useful for evaluation of thermophysical and thermomechanical properties of these TE materials.","abstract_html":"The thermoelectric properties of bismuth telluride based thermoelectric (TE) materials are well-characterized, but comparatively little has been published on the thermomechanical properties. In this paper, dynamic mechanical analysis (DMA) and differential scanning calorimetry data for bismuth telluride based TE materials is presented. The TE materials' tan delta values, indicative of viscoelastic energy dissipation modes, approached that of glassy or crystalline polymers, were greater than ten times the tan delta of structural metals, and reflected the anisotropic nature of TE materials. DMA thermal scans showed changes in mechanical properties versus temperature with clear hysteresis effects. These results showed that the application of DMA techniques are useful for evaluation of thermophysical and thermomechanical properties of these TE materials.","abstract_has_math":false,"creators":["White, John B."],"institution":"University of North Texas","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Brostow, Witold, 1934-","Menard, Kevin P.","Bouanani, Mohamed El","Reidy, Richard"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2002,"date_issued":"2002-08","date_published":"2002-08","updated_at":"2026-07-24T05:34:52Z","subjects":["Thermoelectric materials.","Bismuth.","Tellurides.","DMA","bismuth telluride","modulus","tan delta","thermophysical"],"languages":["English"],"rights":["Use restricted to UNT Community","Copyright","White, John B.","Copyright is held by the author, unless otherwise noted. All rights reserved."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["oclc: 50949612","https://digital.library.unt.edu/ark:/67531/metadc3166/","ark: ark:/67531/metadc3166"],"render_values":[{"text":"oclc: 50949612","href":null,"code":true},{"text":"https://digital.library.unt.edu/ark:/67531/metadc3166/","href":"https://digital.library.unt.edu/ark:/67531/metadc3166/","code":true},{"text":"ark: ark:/67531/metadc3166","href":null,"code":true}]}]},"links":{"outbound_url":"https://doi.org/10.12794/metadc3166","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Brostow, Witold, 1934-","Menard, Kevin P.","Bouanani, Mohamed El","Reidy, Richard"]},{"key":"dc:creator","label":"Author","values":["White, John B."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2002-08"]},{"key":"dc:publisher","label":"Institution","values":["University of North Texas"]},{"key":"dc:type","label":"Dc Type","values":["Thesis or Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Thermoelectric materials.","Bismuth.","Tellurides.","DMA","bismuth telluride","modulus","tan delta","thermophysical"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["Use restricted to UNT Community","Copyright","White, John B.","Copyright is held by the author, unless otherwise noted. 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DMA thermal scans showed changes in mechanical properties versus temperature with clear hysteresis effects. These results showed that the application of DMA techniques are useful for evaluation of thermophysical and thermomechanical properties of these TE materials."]},{"key":"dc:format","label":"Dc Format","values":["Text"]},{"key":"dc:title","label":"Title","values":["Application of Thermomechanical Characterization Techniques to Bismuth Telluride Based Thermoelectric Materials"]}]}],"canonical_facts":{"dc:contributor":["Brostow, Witold, 1934-","Menard, Kevin P.","Bouanani, Mohamed El","Reidy, Richard"],"dc:creator":["White, John B."],"dc:date":["2002-08"],"dc:description":["The thermoelectric properties of bismuth telluride based thermoelectric (TE) materials are well-characterized, but comparatively little has been published on the thermomechanical properties. In this paper, dynamic mechanical analysis (DMA) and differential scanning calorimetry data for bismuth telluride based TE materials is presented. The TE materials' tan delta values, indicative of viscoelastic energy dissipation modes, approached that of glassy or crystalline polymers, were greater than ten times the tan delta of structural metals, and reflected the anisotropic nature of TE materials. DMA thermal scans showed changes in mechanical properties versus temperature with clear hysteresis effects. 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